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Old 11-13-2007, 12:11 PM   #1 (permalink)
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Question COM port issue with tethering (8320)

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Hi guys,

I'm having an issue with tethering my 8320 to my laptop as a modem. I am unable to get the proper COM port option in Desktop Manager.

I followed the tethering directions on the BB website, and it worked properly for about 30 seconds, and then the connection froze and refused to reconnect. Any attempts since then have just timed out.

In troubleshooting, I checked COM ports, and the only COM option in Desktop Manager corresponded to my laptop's built-in modem, not the "Standard Modem." You can't change the COM port of the Standard Modem, but I tried changing the laptop's modem, and Desktop Manager just changed its COM to match the laptop's modem again.

I uninstalled everything (the uninstall program locked near the end, but it looked like it had finished), then disabled the laptop's modem, hoping to get it "out of the way." Then I reinstalled, and no dice. Now it doesn't list any COM port options in Desktop Manager. I checked, and there are RIM Viritual COM ports on COM3 and COM4. The Standard Modem is installed on COM3.

The only options I have for connection settings in Desktop Manager are "none" and "USB." The USB connection works fine for transfers, but obviously not for tethering.

Not sure where to go from here.
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Old 11-13-2007, 12:12 PM   #2 (permalink)
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I just saw the "clean uninstall" thread and will try that and report back.

Edit: Clean uninstall and reinstall resulted in COM5 listed in Connection Settings, which again points to the laptop's modem, not the Standard Modem. Dialing attempts time out. :(

Last edited by thomsbrain : 11-13-2007 at 01:11 PM.
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Old 12-17-2007, 08:28 PM   #3 (permalink)
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Default Problem with COM ports when attempting to use 8320 as tethered modem

I have had the same problem, has anyone any thoughts on this? I'm not very literate in COM ports, something to do with BIOS?

Thank you.
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Old 12-18-2007, 01:23 AM   #4 (permalink)
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I think I got it sorted out!

1. Despite the official directions for tethering, you do NOT need to select the COM port option in Desktop Manager's connection settings. USB works just fine. This means that the COM port issue is a non-issue.

2. When the connection freezes and/or times out when connecting, it seems that the problem can be resolved by removing the battery from your Blackberry and putting it back in again, then letting the Blackberry boot back up (this takes a few minutes). Afterwards, the connection should work properly. Simply "turning off" the Blackberry does not seem to be enough to fix things, as this doesn't really reboot the OS but just suspends it. You need to actually remove the battery to get it to reboot.
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Old 12-18-2007, 11:02 AM   #5 (permalink)
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I was able to remedy the my COM port problem by using the above suggestion (selection USB in Desktop - Connections instead of trying to select a COM port which was not there).
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